Test of lepton flavour universality at the NA62 experiment at CERN

CERN NA62 实验中的轻子风味通用性测试

• 批准号: 2895514
• 金额: --
• 依托单位: Lancaster University
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2895514
• 关键词: Test; lepton; flavour; universality; NA62

Lepton Flavour Universality (LFU) is a pillar of the Standard Model (SM) that implies equal interaction strength for particles from different lepton families, as the electron and the muon. Several recent experimental results in particle physics seem to suggest possible LFU violation, which is predicted by many Beyond the Standard Model (BSM) scenarios. Kaons, the lightest particles containing the "strange" quark, provide an outstanding way of searching for BSM physics via precise measurements. Experimental studies of decays of strange and light quarks is a very active field of research, and significant progress is expected over the next decade. The NA62 experiment at CERN, a multi-purpose experiment investigating rare kaon decays, is the flagship of the European kaon physics programme and a leader in this field worldwide. NA62 has been operational since 2016 and will continue to collect data at least until 2025. Due to a uniquely intense kaon beam provided by the CERN accelerator complex and a range of state-of-the-art detectors, a variety of stringent SM tests can be performed within the NA62 experiment. In particular, the analysis of leptonic kaon decays within NA62 could lead to the most-precise LFU test in the world. Jamimah will join the NA62 collaboration and will contribute to the LFU research with the NA62 data. An extension of the LFU analysis to constrain several BSM scenarios will be performed. Joining a medium-size international collaboration, Jamimah will have the opportunity to play a leading role on a hot topic in particle physics, while developing key expertise on hardware, software, and data analysis. Jamimah will also spend some months on-site at CERN, acting as a detector expert and doing data-taking shifts.

轻子味普适性（LFU）是标准模型（SM）的支柱，它意味着来自不同轻子家族的粒子（如电子和μ子）的相互作用强度相等。粒子物理学中最近的几个实验结果似乎暗示了可能的LFU破坏，这是许多超越标准模型（BSM）方案所预测的。K介子是最轻的包含“奇异”夸克的粒子，它提供了一种通过精确测量来寻找BSM物理的杰出方法。奇异夸克和轻夸克衰变的实验研究是一个非常活跃的研究领域，预计在未来十年内将取得重大进展。欧洲核子研究中心的NA62实验是一项调查罕见的K介子衰变的多用途实验，是欧洲K介子物理学计划的旗舰，也是该领域的全球领导者。NA62自2016年以来一直在运行，并将继续收集数据至少到2025年。由于CERN加速器复合体提供了独特的强K介子束和一系列最先进的探测器，因此可以在NA62实验中进行各种严格的SM测试。特别是，NA62内轻子K介子衰变的分析可能导致世界上最精确的LFU测试。Jamimah将加入NA62合作，并将利用NA62数据为LFU研究做出贡献。将进行LFU分析的扩展，以约束几种BSM情景。加入一个中等规模的国际合作，Jamimah将有机会在粒子物理学的一个热门话题上发挥主导作用，同时开发硬件，软件和数据分析方面的关键专业知识。Jamimah还将在CERN现场工作几个月，担任探测器专家并进行数据采集。